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Algebra> see attachment and explain it...

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see attachment and explain it

Shivam , 10 Years ago

Grade 12

1 Answers

SHAIK AASIF AHAMED

Last Activity: 10 Years ago

Hello student,
operating R1=R1-R2-R3 we get
L.H.S= $\begin{vmatrix} 0 &-2c^{2} &-2b^{2} \\ b^{2}&a^{2}+c^{2} &b^{2} \\ c^{2}&c^{2} & a^{2}+b^{2} \end{vmatrix}$
By taking 2 commonout of R1 and then operating
R2=R2+R1 and R3=R3+R1 we get
$=2\begin{vmatrix} 0 &c^{2} &b^{2} \\ b^{2}&a^{2} &0 \\ c^{2}&0 & a^{2} \end{vmatrix}$
=2[c²(a²b²-0)-b²(0-a²c²)]
=4a²b²c²

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